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119 lines
3.4 KiB
119 lines
3.4 KiB
#
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# alpha/Makefile
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1994 by Linus Torvalds
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#
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NM := $(NM) -B
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LDFLAGS_vmlinux := -static -N #-relax
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CHECKFLAGS += -D__alpha__ -m64
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cflags-y := -pipe -mno-fp-regs -ffixed-8
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# Determine if we can use the BWX instructions with GAS.
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old_gas := $(shell if $(AS) --version 2>&1 | grep 'version 2.7' > /dev/null; then echo y; else echo n; fi)
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ifeq ($(old_gas),y)
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$(error The assembler '$(AS)' does not support the BWX instruction)
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endif
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# Determine if GCC understands the -mcpu= option.
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have_mcpu := $(call cc-option-yn, -mcpu=ev5)
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have_mcpu_pca56 := $(call cc-option-yn, -mcpu=pca56)
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have_mcpu_ev6 := $(call cc-option-yn, -mcpu=ev6)
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have_mcpu_ev67 := $(call cc-option-yn, -mcpu=ev67)
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have_msmall_data := $(call cc-option-yn, -msmall-data)
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cflags-$(have_msmall_data) += -msmall-data
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# Turn on the proper cpu optimizations.
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ifeq ($(have_mcpu),y)
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mcpu_done := n
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# If GENERIC, make sure to turn off any instruction set extensions that
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# the host compiler might have on by default. Given that EV4 and EV5
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# have the same instruction set, prefer EV5 because an EV5 schedule is
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# more likely to keep an EV4 processor busy than vice-versa.
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ifeq ($(CONFIG_ALPHA_GENERIC),y)
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mcpu := ev5
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_SX164)$(have_mcpu_pca56),nyy)
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mcpu := pca56
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_POLARIS)$(have_mcpu_pca56),nyy)
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mcpu := pca56
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV4),ny)
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mcpu := ev4
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV56),ny)
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mcpu := ev56
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV5),ny)
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mcpu := ev5
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV67)$(have_mcpu_ev67),nyy)
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mcpu := ev67
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mcpu_done := y
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endif
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ifeq ($(mcpu_done)$(CONFIG_ALPHA_EV6),ny)
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ifeq ($(have_mcpu_ev6),y)
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mcpu := ev6
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else
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ifeq ($(have_mcpu_pca56),y)
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mcpu := pca56
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else
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mcpu=ev56
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endif
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endif
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mcpu_done := y
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endif
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cflags-$(mcpu_done) += -mcpu=$(mcpu)
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endif
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# For TSUNAMI, we must have the assembler not emulate our instructions.
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# The same is true for IRONGATE, POLARIS, PYXIS.
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# BWX is most important, but we don't really want any emulation ever.
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CFLAGS += $(cflags-y) -Wa,-mev6
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head-y := arch/alpha/kernel/head.o
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core-y += arch/alpha/kernel/ arch/alpha/mm/
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core-$(CONFIG_MATHEMU) += arch/alpha/math-emu/
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drivers-$(CONFIG_OPROFILE) += arch/alpha/oprofile/
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libs-y += arch/alpha/lib/
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# export what is needed by arch/alpha/boot/Makefile
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LIBS_Y := $(patsubst %/, %/lib.a, $(libs-y))
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export LIBS_Y
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boot := arch/alpha/boot
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#Default target when executing make with no arguments
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all boot: $(boot)/vmlinux.gz
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$(boot)/vmlinux.gz: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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bootimage bootpfile bootpzfile: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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define archhelp
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echo '* boot - Compressed kernel image (arch/alpha/boot/vmlinux.gz)'
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echo ' bootimage - SRM bootable image (arch/alpha/boot/bootimage)'
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echo ' bootpfile - BOOTP bootable image (arch/alpha/boot/bootpfile)'
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echo ' bootpzfile - compressed kernel BOOTP image (arch/alpha/boot/bootpzfile)'
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endef
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